Sealing ring in drive pinion, replacing: Installing

WARNING: This page is about a different car, the 2005 Audi A4, 2004 Audi A4, 2003 Audi A4, and 2002 Audi A4. However, it is still accessible from the selected car via links, so may be relevant.

Installation is reverse of removal, noting the following:

Coat outer edge and sealing lip of oil seal with gear oil.

Fig 1: Installing Driveshaft Seal

Courtesy of VOLKSWAGEN UNITED STATES, INC.

Slide sealing ring onto thrust piece 3403.
Drive sealing ring in up to thrust piece 3403 stop.

Contact surface - A - of thrust piece must lie against drive pinion - B -.

Fill area between sealing lip and dust lip halfway with sealing grease G 052 128 A1.

Fig 2: Identifying Input Shaft

Courtesy of VOLKSWAGEN UNITED STATES, INC.

Completely cover splines on end of shaft (arrow) with insulating tape without creasing or overlapping the tape, to prevent damage to sealing ring when sliding on drive pinion.
Install drive pinion on center of output shaft. (Installation position )

NOTE:

If installing the intermediate flange on the output shaft carelessly, the sealing lips of the sealing ring can be damaged.

Fig 3: Identifying Output Pinion, Intermediate Pinion And Drive Pinion

Courtesy of VOLKSWAGEN UNITED STATES, INC.

Slide drive pinion - 3 - together with the intermediate pinion - 2 - into final drive housing up to stop (tapered roller bearing).

Observe installation position of spur gears (pinion):

Wheel identification (arrows) point outward, away from final drive.

Installing intermediate flange for front final drive → Seal for front final drive, replacing .
Install center differential.